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Test a wide character to see if it's alphanumeric
#include <wctype.h>
int iswalnum( wint_t wc );
- wc
- The wide character you want to test.
libc
Use the -l c option to
qcc
to link against this library.
This library is usually included automatically.
The iswalnum() function tests if the argument wc is an
alphanumeric wide character of the class alpha or
digit.
In the C locale, they're a to z, A to
Z, 0 to 9.
A nonzero value if the character is a member of the class
alpha or digit, or 0 otherwise.
ANSI,
POSIX 1003.1
Safety: | |
Cancellation point |
No |
Interrupt handler |
Yes |
Signal handler |
Yes |
Thread |
Yes |
The result is valid only for wchar_t arguments and
WEOF.
isalnum(),
iswalpha(),
iswcntrl(),
iswctype(),
iswdigit(),
iswgraph(),
iswlower(),
iswprint(),
iswpunct(),
iswspace(),
iswupper(),
iswxdigit(),
setlocale(),
towlower(),
towupper()
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